Prime Factorization: 2 Truths and a Lie

Here are 3 claims of Prime Factorization. Select the lie.

• 2 x 3 x 7 = 35

• 
• 3 x 5 x 8 = 120

Answer explanation

8 is not a prime number since 2 x 2 x 2 = 8, so it can't be a factor in a prime factorization.

Tags

CCSS.6.EE.A.1

Here are 3 claims of Prime Factorization. Select the lie.

• 2 x 2 x 2 x 2 = 16.

• 
• 

Answer explanation

3 x 3 x 13 = 117 not 99, so the claim is false.

Here are 3 claims of Prime Factorization. Select BOTH truths.

• 3 x 3 x 5 = 45

• 
• 

Answer explanation

3 x 3 x 5 does equal 45 and are all primes just like 3 x 3 x 3 does equal 27 and all primes. 2 x 2 x 2 x 5 = 40, not 90.

Which statement about Prime Factorization is the lie?

• All factors must be prime.

• No prime factor can ever be even number.

• A factor tree is the action tool we use to produce a prime factorization statement.

Answer explanation

2 is the only even integer that is a prime number.